crontab man page on Minix

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CRONTAB(1)							    CRONTAB(1)

NAME
       crontab - User crontab manipulation

SYNOPSIS
       crontab -c [user] file
       crontab -l [user]
       crontab -r [user]
       crontab -p

DESCRIPTION
       The  crontab  program allows users to manipulate their personal crontab
       files.  These files are hidden in /usr/spool/crontabs/user  where  user
       is  the	login name of a given user.  The system daemon cron uses these
       crontabs, among others, to run tasks that are to be repeated at regular
       intervals.   See	 crontab(5)  on	 what  a good crontab file should look
       like.

       Only the superuser can specify a user name to manipulate the crontab of
       a given user.  Any other user can only touch their own crontab file.

OPTIONS
       -c [user] file
	      Install file as the crontab file of user.

       -l [user]
	      List the crontab file of user to standard output.

       -r [user]
	      Remove the crontab file of user.

       -p     Tell  cron  to reload its tables.	 Useful for system administra‐
	      tors to signal a change to any  of  the  system  crontab	files.
	      Changes made by the crontab program are signalled automatically.
	      (Mnemonic: -p = "ping".)

FILES
       /usr/spool/crontabs/user	    Per user personal crontab file.

SEE ALSO
       crontab(5), cron(8).

DIAGNOSTICS
       Crontab preparses a new crontab and only installs it if	correct.   All
       errors  are sent to standard error, messages about installing a new ta‐
       ble and telling cron to reload are sent to standard output.

BUGS
       Crontab misses a -e option that other implementations of	 this  command
       allow  one  to  edit the current crontab and install the result.	 Seems
       quite handy until you try to install a new crontab  from	 an  automated
       script.	 That's	 why this command has a -c option that installs a pre‐
       pared crontab file.  Use

	      crontab -l >/tmp/tab
	      ${EDITOR-vi} /tmp/tab
	      crontab -c /tmp/tab

       to get the same effect as crontab -e.

AUTHOR
       Kees J. Bot (kjb@cs.vu.nl)

								    CRONTAB(1)
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